@book{10045,
	author = {Gupta, R.R. and Kumar, M.},
	title = {Heterocyclic chemistry : principles, three and four-membered heterocycles (Volume 1)},
	publisher = {Springer},
	year = {2013},
	address = {New Delhi},
	note = {1792, 12120, 30184, 30186, 30188, 30190, 30192 v.1; 12121, 30185, 30187, 30189, 30191, 30193 v.2}
}